<template>
    <div>
        <div style="margin: 10px 0">
            <el-input style="width: 200px" placeholder="请输入文件名称" suffix-icon="el-icon-search"
                      v-model="name"></el-input>
            <el-button class="ml-5" type="primary" @click="load">搜素</el-button>
            <el-button class="ml-5" type="warning" @click="reset">重置</el-button>
        </div>
        <divx style="margin: 10px 0">
            <el-upload action="http://localhost:8085/file/upload" :show-file-list="false"
                       :on-success="handleFileUploadSuccess" :on-error="handleExcelImportError"
                       style="display: inline-block">
                <el-button type="primary" class="ml-5">上传文件<i class="el-icon-top"></i></el-button>
            </el-upload>
            <el-popconfirm
                    class="ml-5"
                    confirmButtonText='确定'
                    cancelButtonText='我再想想'
                    icon="el-icon-info"
                    iconColor="red"
                    title="您确定批量删除这些数据吗？"
                    @confirm="delBatch ">
                <el-button type="danger" slot="reference">批量删除<i class="el-icon-remove-outline"></i></el-button>
            </el-popconfirm>
        </divx>
        <el-table :data="tableData" border stripe :header-cell-class-name="headerBg"
                  @selection-change="handleSelectionChange">
            <el-table-column type="selection" width="55"></el-table-column>
            <el-table-column prop="id" label="ID" width="140"></el-table-column>
            <el-table-column prop="name" label="文件名称" ></el-table-column>
            <el-table-column prop="type" label="文件类型" ></el-table-column>
            <el-table-column prop="size" label="文件大小（kb）"></el-table-column>
            <el-table-column label="下载">
                <template slot-scope="scope">
                    <el-button type="primary" @click="download(scope.row.url)">下载</el-button>
                </template>
            </el-table-column>
            <el-table-column label="启用（默认）">
                <template slot-scope="scope">
                    <el-switch v-model="scope.row.enable" active-color="#13ce66" inactive-color="#ccc" @change="changeEnable(scope.row)"></el-switch>
                </template>
            </el-table-column>
            <el-table-column label="操作" width="200" align="center">

                <template slot-scope="scope">
                    <el-popconfirm
                            class="ml-5"
                            confirmButtonText='确定'
                            cancelButtonText='我再想想'
                            icon="el-icon-info"
                            iconColor="red"
                            title="您确定删除吗？"
                            @confirm="del(scope.row.id)">
                        <el-button type="danger" slot="reference">删除<i class="el-icon-remove-outline"></i>
                        </el-button>
                    </el-popconfirm>
                </template>
            </el-table-column>
        </el-table>
        <div style="padding: 10px 0">
            <el-pagination
                    @size-change="handleSizeChange"
                    @current-change="handleCurrentChange"
                    :current-page="pageNum"
                    :page-sizes="[5, 10, 15, 20]"
                    :page-size="pageSize"
                    layout="total, sizes, prev, pager, next, jumper"
                    :total="total"
            >
            </el-pagination>
        </div>
    </div>

</template>

<script>
    export default {
        name: "File",
        data() {
            return {
                tableData: [],
                name: '',
                multipleSelection: [],
                pageNum: 1,
                pageSize: 10,
                total: 10
            }
        },
        created() {
            this.load();
        },
        methods: {
            load() {
                /*request.get("http://localhost:8081/user/page?pageNum=" + this.pageNum + "&pageSize=" + this.pageSize+"&username="+this.username).then(res=>{*/
                this.request.get("/file/page", {
                    params: {
                        pageNum: this.pageNum,
                        pageSize: this.pageSize,
                        name: this.name,
                    }
                }).then(res => {
                    console.log(res);
                    //解析数据
                    this.tableData = res.data.records;
                    this.total = res.data.total;
                })
                /*//请求分页查询数据
                fetch("http://localhost:8081/user/page?pageNum=" + this.pageNum + "&pageSize=" + this.pageSize+"&username="+this.username).then(res => res.json()).then(res => {
                    console.log(res);
                    this.tableData = res.data;
                    this.total = res.total;
                })*/

            },
            reset() {
                this.name = "";
                this.load();
            },
            changeEnable(row){
                this.request.post("/file/update", row).then(res => {
                    console.log(res);
                    if(res.code==='200'){
                        this.$message.success("操作成功");
                    }
                });
            },
            del(id) {
                this.request.delete("/file/" + id).then(res => {
                    if (res.code==='200') {//注意这里是通过code来判断
                        this.$message.success("删除成功");
                        this.dialogFormVisible = false;//关闭弹窗
                        this.load();
                    } else {
                        this.$message.error("删除失败")
                    }
                })
            },
            handleSelectionChange(val) {
                // console.log(val);
                this.multipleSelection = val;
            },
            delBatch() {
                let ids = this.multipleSelection.map(v => v.id)  //扁平化处理:将对象的数组[{},{},{}]==>处理成类似于[1,2,3]这样纯id的数组
                this.request.post("/file/del/batch", ids).then(res => {
                    if (res.data) {
                        this.$message.success("批量删除成功");
                        this.dialogFormVisible = false;//关闭弹窗
                        this.load();
                    } else {
                        this.$message.error("批量删除失败")
                    }
                })
            },
            handleSizeChange(pageSize) {
                // console.log(pageSize);
                this.pageSize = pageSize;
                this.load();
            },
            handleCurrentChange(pageNum) {
                // console.log(pageNum);
                this.pageNum = pageNum;
                this.load();
            },
            handleFileUploadSuccess(res) {
                // console.log(res)
                this.load()
            },
            download(url) {
                window.open(url)
            }
        }
    }
</script>

<style scoped>

</style>